Wrench.



PATENTBD APR .14, 1908.

0. MILLER.

WRENG H.

APPLIOATION FILED JAN. 8. 1908.

ATTORNEY.

WASHINITFON, u. c.

.further, to provide CALVIN MILLER, OF WHEELING, WEST VIRGINIA.

WRENCH.

Application filed January 9, 1908.

Specification of Letters Patent.

Patented April 14, 1908. Serial No. 409,896.

To all whom it may concern: I

Be it known that I, CALVIN MILLER, a citizen of the United States of America, and resident of W'heeling,'county of Ohio, and State of West Virginia, have invented certain new and useful Improvements in Wrenches, of which the following is a specification.

My invention relates to new and useful improvements in wrenches, and more particularly to a wrench of the sliding jaw type; and it has for its chief object to provide a wrench having a jaw which has a certain range of self adjustment, rendering its grip upon nuts vise-like and adapting it for use upon nuts of varying sizes without manipulation of its adjusting nut.

A further object is to provide a wrench which may be grasp nuts of any size and which does not require that such adjustment be accurate in order to prevent its slipping on said nut and, a wrench whose grasp upon a nut becomes more firm as the power applied thereto is increased.

With these and other objects in view, the invention finally consists in the particular construction, arrangement and combination of parts which will hereinafter be fully described, reference being herein had to the accompanying drawing, forming a part of this specification, in which Figure 1 is a side elevation of the invention; Fig. 2 is a longitudinal section of the same; Fig. 3 is a side elevation of the shank, detached; Fig. 4 is a detail perspective view of the sliding jaw; Fig. 5 is a similar view of the sleeve and Fig. 6 is a similar view of the handle.

Referring to said drawing, in which like reference characters designate like parts throughout the several views1 indicates a longitudinal shank or stem which is preferably rectangular in cross section and which has a fixed jaw 2 upon its end. Adjustably mounted upon said stem 1 is a substantially rectangular sleeve 3 which is loosely embraced by a sliding jaw 4, which latter is adapted to coact with said fixed jaw 2 in a manner which will hereinafter be explained. An integral tail-piece 5 carried by said sleeve 3lies parallel to the stem 1 and has upon its rear end an angular-projecting lip or guard 6, between which and the rear end of the sleeve proper is an adjusting nut 7, the latter being interiorly threaded and traveling upon readily adjusted by hand to j threads 8 provided upon the angular edges of the rear end of said stem for adjusting said sleeve to any The said adjusting nut 7 takes up the entire space intervening between the guard 6 and the rear end of said sleeve, as shown in Figs. 1 and 2. Pivotally connected to integral lugs 10 carried upon the top of said sleeve 3 is a handle 11 which constitutes a lever of the first class and Whose end is provided with parallel bifurcations 12 for receiving said lugs 10. Integral lateral sleeve-straddling arms 13 have their front faces or bearingsurfaces 14 in engagement with the rear edges of the sides of said jaw 4, whereby said jaw is thrust forward along said sleeve 3 when downwardly-directed force'is applied to said handle. Carried by said sleeve 3 directly in front of the lugs 10 is a transverse abutment 15 against which the rear edge of the back of the movable jaw 4 rests when the front face of the latter stands flush with the front end of said sleeve. The sides of said jaw extend rearwardly beyond this abutment to a point where they just engage the bearing surfaces 14 of the arms 13 when the handle 11 has been raised to its full limit. Limiting the upward movement of said handle is a central integral nose 16 adapted for engaging the adjacent face of the sleeve, as shown in Fig. 2. Lateral lugs 17 carried on the extreme rear ends of the sides of the movable jaw stand in recesses 18 formed between said arms 18 and projections 19 integral'with said handle. As is obvious, the nose 16 may be wholly dispensed with, as the projections 19 interlock with the movable jaw in such manner as to limit the upward movement of the handle.

In using the wrench, the adjusting nut 7 is manipulated by hand to adjust the jaw 4 with relation to the size of the nut to be grasped, the handle being at the same time raised to withdraw the movable jaw to its limit on the sleeve. This adjustment need not be made with nicety, or accuracy, but only to bring the movable and fixed jaws to such a distance apart that manipulation of the handle will effect the further closing of the jaws upon the nut. The jaws then being made to straddle the nut, power is applied to the handle, causing the jaw 4, through the arms 13, to be forced forward into close nutgrasping position, which position may be anywhere between that shown in full lines and that shown in dotted lines in Fig. 1. To

desired position on said stem.

release the jaws, the handle is raised. This movement causes the projections 19 to engage the lugs 17 and thus to force the jaw 4 rearward along said sleeve.

It will be noted that the wrench hereinbefore described has a certain range of self adjustment, rendering close or accurate adjustment by hand unnecessary; that a powerful grasp upon a nut may be readily obtained, thereby rendering the mutilation of the corners of a nut well-nigh impossible; that the greater the power applied to the handle, the tighter the grasp of the jaws upon the nut will become; and that, within a certain range, the wrench may be employed upon varying sizes of nuts without its being necessary to resort to hand adjustment.

, Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

1. In a wrench, a stem having a fixed jaw, an angular longitudinallymovable sleeve adjustably mounted upon said stem, a movable jaw loosely embracing said sleeve, a lever-like handle pivotally mounted upon said sleeve, and arms carried by said. handle whereby downwardly-directed force applied to said handle thrusts said movable jaw forward.

2. In a wrench, a stem having a fixed jaw, an angular longitudinally-movable sleeve ad.- justably mounted upon said stem, a movable jaw loosely embracing said sleeve, a leverlike handle pivotally mounted upon said sleeve, arms carried by said handle whereby downwardly-directed force applied to said handle thrusts said movable jaw forward, and means whereby said jaw is retracted upon raising said handle.

3. In a wrench, astem having a fixed jaw, a sleeve adjustably mounted upon said stem, a movable jaw for coacting with said fixed jaw, said movable jaw being carried by said sleeve and having a certain range of movement independent of said sleeve, a handle pivotally mounted upon said sleeve, arms carried by said. handle in engagement with said movable jaw whereby the latter is forced forward along said sleeve when the handle is depressed, and means carried by said handle whereby said jaw is retracted when said handle is elevated.

4. In a wrench, a stem, rectangular in cross section, having a fixed jaw, a sleeve slidable upon said stem, means for adjusting said sleeve upon said stem, a movable jaw for coacting with said fixed jaw, said movable jaw being slidably mounted upon said sleeve, a handle pivotally mounted upon said sleeve, said handle constituting a lever of the first class having its point in operative engagement with said movable jaw whereby downwardly-directed force applied thereto effects a forward movement of said jaw.

5. In a wrench, a stem, rectangular in cross section, having a fixed jaw, a sleeve slidable upon said stem, a tail-piece carried by said sleeve, a guard terminating said tailpiece, an adjusting nut on said stem, said adjusting nut being held between the rear end of said sleeve and said guard, a movable jaw for coacting with said fixed jaw, said movable jaw being slidably mounted upon said sleeve, a handle pivotally mounted upon said sleeve, said handle constituting a lever of the first class having its point in operative engagement with said movable jaw whereby downwardly-directed force applied thereto effects the thrusting forward of said jaw, and means carried by said handle whereby the raising of the latter effects the retraction of said jaw.

6. In a wrench, a stem, rectangular in cross section, having a fixed jaw, a sleeve slidable upon said stem, a tail-piece carried by said sleeve, a guard terminating said tailpiece, an adjusting nut on said stem, said adjusting nut being held between the rear end of said sleeve and said guard, a movable jaw for coacting with said fixed jaw, said movable jaw being slidably mounted upon said sleeve, a handle pivotally mounted upon said sleeve, and sleeve-straddling arms carried by said handle in engagement with said jaw whereby the latter is forced forward along said sleeve when said handle is lowered.

7. In a wrench, a stem having a fixed jaw, a sleeve adjustably mounted on said stem, a movable jaw for coacting with said fixed jaw, said movable jaw being slidably mounted upon said sleeve, a handle pivotally mounted upon said sleeve, sleeve-straddling arms carried by said handle in engagement with saidjaw whereby the latter is forced forward along said sleeve when said handle is lowered, and means whereby said jaw is returned along said sleeve when said handle is raised.

8. In a wrench, a stem having a fixed jaw, a sleeve adjustably mounted on said stem, a movable jaw for coacting with said fixed jaw, said movable jaw being slidably mounted upon said sleeve, a handle pivotally mounted upon said sleeve, sleeve straddling arms carried by said handle in engagement with said jaw whereby the latter is forced forward along said sleeve when said handle is lowered, and interengaging means carried by said handle and said ja'w whereby the latter is returned along said sleeve when the former is raised.

In testimony whereof I affix my signature in presence of two subscribing witnesses.

CALVIN MILLER.

Witnesses:

E. A. LENKARD, H. E. DUNLAP. 

